Transform Class

.NET Framework (current version)

Represents the abstract base class from which all <Transform> elements that can be used in an XML digital signature derive.

Namespace: System.Security.Cryptography.Xml
Assembly: System.Security (in System.Security.dll)

Inheritance Hierarchy

Syntax

C++

[HostProtectionAttribute(SecurityAction::LinkDemand, MayLeakOnAbort = true)]
public ref class Transform abstract

Constructors

	Name	Description
	Transform()	Initializes a new instance of the Transform class.

Properties

	Name	Description
	Algorithm	Gets or sets the Uniform Resource Identifier (URI) that identifies the algorithm performed by the current transform.
	Context	Gets or sets an XmlElement object that represents the document context under which the current Transform object is running.
	InputTypes	When overridden in a derived class, gets an array of types that are valid inputs to the LoadInput method of the current Transform object.
	OutputTypes	When overridden in a derived class, gets an array of types that are possible outputs from the GetOutput methods of the current Transform object.
	PropagatedNamespaces	Gets or sets a Hashtable object that contains the namespaces that are propagated into the signature.
	Resolver	Sets the current XmlResolver object.

Methods

	Name	Description
	Equals(Object^)	Determines whether the specified object is equal to the current object.(Inherited from Object.)
	Finalize()	Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection.(Inherited from Object.)
	GetDigestedOutput(HashAlgorithm^)	When overridden in a derived class, returns the digest associated with a Transform object.
	GetHashCode()	Serves as the default hash function. (Inherited from Object.)
	GetInnerXml()	When overridden in a derived class, returns an XML representation of the parameters of the Transform object that are suitable to be included as subelements of an XMLDSIG <Transform> element.
	GetOutput()	When overridden in a derived class, returns the output of the current Transform object.
	GetOutput(Type^)	When overridden in a derived class, returns the output of the current Transform object of the specified type.
	GetType()	Gets the Type of the current instance.(Inherited from Object.)
	GetXml()	Returns the XML representation of the current Transform object.
	LoadInnerXml(XmlNodeList^)	When overridden in a derived class, parses the specified XmlNodeList object as transform-specific content of a <Transform> element and configures the internal state of the current Transform object to match the <Transform> element.
	LoadInput(Object^)	When overridden in a derived class, loads the specified input into the current Transform object.
	MemberwiseClone()	Creates a shallow copy of the current Object.(Inherited from Object.)
	ToString()	Returns a string that represents the current object.(Inherited from Object.)

When performing XML signing and verification, the <Transform> element describes how the signer transformed the data object that was signed. The verifier of a document then uses the <Transform> element to transform the signed data in the same manner. If the verifier cannot transform the signed data in the same manner, the document cannot be verified.

Use a class that derives from the Transform class whenever you need to add one or more transform objects to an encrypted XML document or to a signed XML document.

For more information about the <Transform> element, see the XMLDSIG specification, which is available from the World Wide Web Consortium (W3C) at www.w3.org/TR/xmldsig-core/, or the XML encryption specification, which is available from the W3C at www.w3.org/TR/xmlenc-core/.

Version Information

.NET Framework
Available since 1.1

Thread Safety

Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.